JP3096567B2 - Rice milling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice milling apparatus having a receiving unit for receiving brown rice to be milled, and a rice milling unit capable of milling brown rice received in the receiving unit with different milling accuracy.

[0002]

2. Description of the Related Art Conventionally, a milling equipment 1 has a structure in which the milling accuracy can be adjusted. For example, as shown in FIG. 1, a plurality of milling machines 3 are provided below a receiving portion 2 for brown rice. Thus, by providing the discharge path 4 through which the polished rice can be discharged from each stage, it is possible to obtain polished rice having different grinding accuracy. In addition, there is a single rice milling machine with a configuration in which milled rice is circulated from the lower side of the rice miller to the upper side of the rice miller, and the number of circulations is adjusted to adjust the milling accuracy. Are known. By the way, in the case of polishing rice by adjusting the milling accuracy in this way, conventionally, before the rice polishing operation, the worker checks the condition of brown rice,
The milling precision (milling degree) was determined. Here, even when the freshness is degraded, for example, brown rice to be milled is a new rice, an old rice, an old rice, etc., the rice is milled based on the empirically known milling accuracy (milling degree). .

[0003]

Therefore, the setting of the milling accuracy in the milling operation is likely to depend on the operator's feeling, and the standards differ for each operator. Had not been done. In addition, when freshness is deteriorated, such as new rice, old rice, and old rice, rice milling is performed based on experience values, so milling accuracy (milling degree) is not set according to the condition of each brown rice, Since the milling accuracy is not set according to the predetermined physical property standards, the rice is milled on the side where the rice milling yield is low, and there is also a problem in this respect. An object of the present application is to provide a rice milling apparatus that can perform rice milling on a predetermined basis in accordance with the old rice conversion degree of brown rice, for example, even for brown rice having a different old rice conversion degree.

[0004]

To achieve this object, the feature of the rice milling equipment of the present invention is to provide brown rice odor detecting means for detecting the odor emitted by brown rice and to detect the odor detected by the brown rice odor detecting means. According to the information, the milling precision adjusting means for changing the rice removal rate in the milling process in the milling section is provided. And, in the configuration of the above-mentioned rice milling equipment, the odor information is the rising amount of the detection value at the time of starting the odor detection by the brown rice odor detecting means, and the milling precision adjusting means is such that the rising amount is large,
It is preferable that the bran removal rate is largely adjusted. Furthermore, in the configuration of the above-mentioned rice milling equipment, the rice mill includes rice odor detection means for detecting the odor emitted by the white rice which has completed the rice polishing in the rice polishing part, and according to the odor information detected by the rice odor detection means, it is necessary to mill rice again. It is preferable to provide a whitening state confirming means for determining whether or not to perform the whitening. And the operation and effect are as follows.

[0005]

The rice polishing facility of the present invention is provided with brown rice odor detecting means for detecting an odor emitted from brown rice, and the state of the brown rice (for example, the degree of freshness deterioration due to the conversion to old rice) is determined based on the detection value of this means. It is said that the deterioration of rice freshness is caused by the oxidation and hydrolysis of components contained in rice bran, and lipids (triglycerides) and proteins in rice bran are
Oxidizes with storage to become volatile odor components such as fatty acids and carbonyl compounds, which are generated from brown rice. The brown rice odor detecting means detects these odor components, and it is possible to know the necessity of milling based on the information, and the milling precision adjusting means adjusts the rice bran removal rate based on this information. Therefore, according to the odor information that is mainly used as an index for determining the freshness state of brown rice and also as an index for the state of bran,
By removing the bran, it was possible to obtain a rice milling facility capable of milling rice that matches the freshness of brown rice.

Further, in the above-mentioned rice milling equipment, the rising amount of the detection value at the time when the odor detection is started by the brown rice odor detecting means is detected as the odor information, and the milling precision adjusting means according to this amount, the rising amount is large. About
If the bran removal rate is to be adjusted largely, the freshness status of brown rice can be detected quickly and with high sensitivity, and the bran removal rate is increased based on the degree of this detection information, so that sufficient and sufficient milling is performed. be able to. Here, FIG. 2 shows a change state of the detection value of the odor component concentration by the brown rice odor detection means in the time domain, and the detection output in new rice is the lowest, and as the storage period becomes longer, the detection output becomes lower. This indicates that the concentration of odor components emanating from old rice increases. Further, the rising amount of the detection value at the start of the detection (the first derivative value at the origin and the value after a certain period of time in the vicinity of the origin) also increases as the freshness deteriorates. Here, “a” and “b” indicate a storage period, and “a” is about twice as long as “b”.

Further, in the above-mentioned rice milling equipment, the rice mill is provided with white rice odor detecting means for detecting an odor emitted from the white rice which has been completely polished, and it is necessary to re-mill rice according to the odor information detected by the white rice odor detecting means. If the polished rice is provided with a polished condition confirmation means, it is possible to determine the condition of the polished rice based on the smell emanating from it at the stage when the polished rice is completed (basically, this criterion is It is judged that unnecessary rice bran remains, and that it is necessary to mill rice again). Initially, it is determined whether or not appropriate rice milling has been performed in the milling process set by the brown rice odor detection means and the milling precision adjustment means. Then, it is determined by the whitening state confirming means whether or not further polishing is necessary, and if necessary, further polishing can be performed. As a result, in both the rice milling start stage and the rice milling completion stage, it is possible to perform appropriate rice milling while judging the freshness deterioration state of the rice.

[0008]

As described above, it is possible to mill rice in accordance with the degree of old rice conversion on a predetermined basis according to the situation of each brown rice. Therefore, it is possible to improve the rice polishing yield. Further, it is possible to accurately determine the condition of brown rice and the condition of polished white rice, and perform a preferable rice polishing operation.

[0009]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the configuration of the rice polishing equipment 1 of the present application. Rice milling equipment 1 is provided with a receiving unit 2 for receiving brown rice to be milled, and a brown rice provided with a first odor sensor 10 as brown rice odor detecting means for detecting an odor emitted by the brown rice received by the receiving unit 2. Odor detector 11, rice mill 5 in which a plurality of rice mills 3 are arranged in the flow direction of rice, and second odor sensor 1 as white rice odor detection means for detecting an odor emitted from milled white rice
And a white rice odor detection unit 13 in which the white rice odor detection unit 2 is provided.

The first odor sensor 10 and the second odor sensor 12 are each composed of an odor sensor, and can detect an odor emitted from rice that has become old. As these odor sensors 10 and 12, gas chromatograph type gas sensors,
A semiconductor type gas sensor (for example, portable type odor sensor XP-329Series manufactured by Shin-Cosmos Electric) or the like is used. The rice mill 5 is provided with four rice mills 3 as shown in the figure,
A first rice mill 31, which performs a minimum basic milling, a second rice mill 32, a third rice mill 33, and a fourth rice mill 34, which mill the pre-milled rice milled by this rice mill in three stages. I have. The second to fourth rice mills 32, 33, 34 are connected in series by a continuous transport path 41, and a bypass path 42 is provided to directly mill the milled white rice from each of the outlets 35, 36, 37, 38. A configuration capable of transporting rice is employed in the delivery section 6 for delivering the rice. Furthermore, the third rice mill 3
The third and fourth rice mills 34 are connected in parallel, respectively.
A configuration is employed in which the milled rice is mixed from these milling machines 33 and 34 according to a desired milling condition and transported to the delivery section 6. Therefore, the rice that has passed through each of the rice mills sequentially from the first rice mill 31 to the fourth rice mill 34 has the highest milling accuracy (high rice removal rate), and the second rice mill 3
What is directly conveyed from 2 to the delivery section 6 is in a state where the grinding accuracy is low (a state where the bran removal rate is low). In other words, the milling accuracy of the white rice obtained from the rice milling equipment can be adjusted by the operation of passing or not passing through the second to fourth rice mills 32, 33, 34. Here, the selection of the transport path is performed by an opening / closing valve 43 provided in the path, and the opening / closing operation is performed by the rice milling control device 8. Exit 3 of second rice mill 32, third rice mill 33, fourth rice mill 34
Each of 5, 36, 37, and 38 is provided with a quality inspection device 7 for detecting the quality (for example, whiteness) of the rice conveyed at this site. Then, the polished white rice discharged from the delivery unit 6 is inspected again by the polished rice odor detection unit 13 for its odor, and the polished rice is temporarily terminated.

In the milling equipment 1, a first odor sensor 10, a second odor sensor 12 provided in the brown rice odor detecting section 11, a white rice odor detecting section 13, and an outlet section 35 of each rice mill are provided. , 36, 37, and 38 are provided with a milling control device 8 that collects detection information from the quality inspection device 7 and performs milling control. The milling control device 8 includes a milling precision adjusting means 80 for changing the bran removal rate of the milling process in the milling unit 5 in accordance with the odor information generated by the brown rice detected by the first odor sensor 10. This configuration will be described in more detail. As shown in FIG. 2 described above, in the output from the first odor sensor 10, the rising amount of the detection value at the start of the odor detection (at the origin (at the start of measurement)) The first derivative value or the amount of increase over a certain period of time can be calculated and derived. According to the rising amount, the larger the amount, the more the milling is performed, and the rice milling machine 3 is adjusted so that the rice removal rate is greatly adjusted. Is adopted to adjust the transport path of the image. That is, FIG.
As shown in the figure, the rice transport route is selected and the milling accuracy is adjusted so that the bran removal rate is increased and changed from about 5 minutes to about 15 minutes according to the magnitude of the rising amount of the odor component concentration indicated by the horizontal axis. It is. Thus, in the rice milling equipment 1 of the present application, according to the deterioration of rice freshness (degree of old rice),
The milling accuracy is adjusted.

By the way, the second rice odor sensor 12 similarly detects odor components from the white rice which has been polished for the first time by the above configuration. In the same manner as described above, the rising amount of the detected value is detected, and it is determined whether the detected value is equal to or less than a predetermined value. Those having a predetermined value or less are conveyed and discharged from the facility as product white rice as they are, and those having a predetermined value or more are returned to the milling operation again. That is, the above-mentioned rice polishing control device 8 is provided with a whitening state confirmation unit 81 for determining whether or not the whitening is necessary again according to the odor information detected by the white rice odor detection unit. The result is displayed on a display device 85 provided together with the rice polishing control device 8, and according to the result, the white rice is automatically returned to the rice polishing via the transport portion 44.

The above is the configuration of the rice milling equipment of the present application.
The operation of the brown rice received by the receiving unit 2 will be described in detail. The odor emitted by the brown rice odor detecting means 10 is detected by the brown rice odor detecting means 10, and the odor information is used to determine the bran removal rate required for the brown rice. It is determined by the adjusting means 80.
Then, in the rice milling section 5, after the rice is milled only for the determined rice removal rate, the odor generated by the white rice obtained is detected by the white rice odor detecting means 12, and the state of the white rice is determined. White rice from which the appropriate amount of bran has been removed and which emits an odor less than the fixed amount is sent out from the facility. Therefore, white rice from which good taste can be obtained can be obtained rationally.

[Alternative Embodiment] In the above embodiment, the rice bran removal rate is adjusted and set based on the rising amount (characteristic) of the detection information detected by the odor sensor. However, in the steady state of the detection value detected by the odor sensor. The bran removal rate may be adjusted according to the value, the time required to reach a predetermined value, and the like. In these cases, the configuration on the software side of the brown rice odor detection means can be simply configured. Furthermore, the freshness deterioration state of the rice is determined based on the component concentration of the specific component and the like,
A configuration for polishing rice may be employed. In this case, as the specific component of the odor, a carbonyl compound is appropriate,
Detection can be performed well.

Further, in the above configuration, a plurality of rice mills are provided on the rice milling path, and rice is removed from an intermediate portion thereof to adjust the degree of bran removal. However, a small number of rice mills are provided. Alternatively, the rice to be milled may be circulated between the upper side and the lower side of the rice mill, and the number of circulations may be changed to change the degree of milling. In this case, since the number of rice mills can be reduced, equipment costs can be reduced.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a rice milling facility.

FIG. 2 is a diagram showing the detection status of odor component concentrations in rice with different degrees of old rice conversion.

FIG. 3 is a diagram illustrating a relationship between a rising amount of a sensor detection value and a rice bran removal rate.

[Explanation of symbols]

 2 Receiving part 5 Rice polishing part 10 Brown rice odor detecting means 12 White rice odor detecting means 80 Milling precision adjusting means 81 Polishing state checking means

Continuation of the front page (72) Inventor Ryogo Yamauchi 1-1-1 Hama, Amagasaki-shi, Hyogo Kubota Technology Development Laboratory Co., Ltd. (56) References JP-A-4-284856 (JP, A) JP-A-56- 144752 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B02B 5/00-7/02 109

Claims (3)

(57) [Claims] 1. A receiving unit (2) for receiving brown rice to be milled, and a rice milling unit (5) capable of milling the brown rice received in the receiving unit (2) with different milling accuracy. A rice milling equipment, comprising: brown rice odor detecting means (10) for detecting an odor emitted by the brown rice; and, in the rice polishing section (5), according to odor information detected by the brown rice odor detecting means (10). Milling equipment with milling accuracy adjusting means (80) for changing the rate of removal of bran in the milling process. 2. The odor information is a rising amount of a detection value at the time of starting odor detection by the brown rice odor detection means (10), and the polishing accuracy adjusting means (80).
The rice milling equipment according to claim 1, wherein the rice bran removal rate is adjusted to be larger as the rising amount is larger. 3. A white rice odor detecting means (12) for detecting an odor emitted from white rice which has been completely polished in the rice polishing section (5).
The milling equipment according to claim 1, further comprising a milling condition checking means (81) for determining whether or not milling is required again according to the odor information detected by the milled rice odor detecting means (12).